Example sentences with "serological assay", translation memory. enzyme [en´zīm] any protein that acts as a catalyst, increasing the rate at which a chemical reaction occurs. of an ore or drug: His find required an assay … serological assay. The pull-down assay is an in vitro method used to determine a physical interaction between two or more proteins. Define assay. Immunoassay definition is - a technique or test used to detect the presence or quantity of a substance (such as a protein) based on its capacity to act as an antigen. ELISA is the basic assay technique, known as enzyme-linked immunosorbent assay (also referred to as EIA: Enzyme Immunoassay) that is carried out to detect and measure antibodies, hormones, peptides and proteins in the blood. Pull-down assays are useful for both confirming the existence of a protein-protein interaction predicted by other research techniques (e.g., co-immunoprecipitation) and as an initial screening assay for identifying previously unknown protein-protein interactions. Transfection, technique used to insert foreign nucleic acid (DNA or RNA) into a cell, typically with the intention of altering cellular properties. an analysis of a substance, esp. Giga-fren. At body temperature, very few biochemical reactions proceed at a significant rate without the presence of an enzyme. Transfection is employed in a variety of research fields. Diagnosis requires virologic methods based on PCR or serologic assays using the E2 antibody. The human body probably contains about 10,000 different enzymes. PolishPatents. end-point assay: (in biomolecular screening) Kinetic assay run for ... although purists reserve the former for screening of compound libraries and the latter for more generalized cell biology experiments. Bioassay definition, determination of the biological activity or potency of a substance, as a vitamin or hormone, by testing its effect on the growth of an organism. translation and definition "serological assay", Dictionary English-English online. assay synonyms, assay pronunciation, assay translation, English dictionary definition of assay. When you assay a situation, you look at all the elements that created the problem in … The ELISA Assay Understand how an ELISA is performed, learn what serum components are measured in an ELISA, and be able to explain how an ELISA test is used to detect sero-positivity for HIV or any other pathogen. The way an assay is carried out (the method of testing to determine the purity of enzymes) will influence the reported activity values. It is a "sandwich" assay in which the proteins are captured locally as they are secreted by the plated cells, and detection is with a precipitating substrate. See more. ELISPOT (enzyme-linked immunospot assay) refers to ELISA-like capture and measurement of proteins secreted by cells that are plated in PVDF-membrane-backed microplate wells. An assay is a breakdown of a material, examining the individual parts that make up the whole. Phenotypic screening of compounds in a multicellular humanized environment provides richer data for faster translation into the clinic. Two types of transfection, transient and stable, are used experimentally. Apoptosis is a normal genetically programmed cell death where an aging cell at the end of its life cycle shrinks and its remaining fragments are phagocytosed without any inflammatory reaction. 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